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Runtime versions using Node.js - Amazon CloudWatch
syn-nodejs-5.0
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Runtime versions using Node.js

The following section contains information about the CloudWatch Synthetics runtime versions for Node.js. This runtime does not have any browser or framework included.

The naming convention for these runtime versions is syn-language -majorversion.minorversion.

syn-nodejs-5.0

Important

Starting Synthetics syn-nodejs-3.1 and later, Synthetics runtime uses the new namespace. Please migrate the canary script to use the new namespace. Legacy namespace will be deprecated in a future release.

  • @amzn/synthetics-core → @aws/synthetics-core

Major dependencies:

  • Amazon Lambda runtime Node.js 22.x

Changes in syn-nodejs-5.0

  • Upgrade brace-expansion to 5.0.6 to address the following CVE:

    • GHSA-jxxr-4gwj-5jf2

The following earlier runtime versions for Node.js are still supported.

syn-nodejs-4.2

Major dependencies:

  • Amazon Lambda runtime Node.js 22.x

Changes in syn-nodejs-4.2

  • Upgrade axios to 1.15.2 to address the following CVEs:

    • CVE-2025-62718

    • CVE-2026-42033

    • CVE-2026-42035

    • CVE-2026-42038

    • CVE-2026-42039

    • CVE-2026-42043

    • CVE-2026-42044

    • CVE-2026-42264

  • Upgrade brace-expansion to 5.0.5 to address the following CVE:

    • CVE-2026-33750

  • Upgrade fast-xml-builder to 1.1.7 to address the following CVE:

    • GHSA-5wm8-gmm8-39j9

syn-nodejs-4.1

Major dependencies:

  • Amazon Lambda runtime Node.js 22.x

Changes in syn-nodejs-4.1

  • Upgrade fast-xml-parser to 5.5.7 to address the following CVEs:

    • CVE-2026-25128

    • CVE-2026-25896

    • CVE-2026-26278

    • CVE-2026-27942

    • CVE-2026-33036

syn-nodejs-4.0

Major dependencies:

  • Amazon Lambda runtime Node.js 22.x

Changes in syn-nodejs-4.0

  • Applied security patches.

syn-nodejs-3.1

Major dependencies:

  • Amazon Lambda runtime Node.js 20.x

Changes in syn-nodejs-3.1

  • Synthetics runtime namespace migration.

  • Type definition is available in npm Registry. Please ensure the type definition package version matches your canary's runtime version.

syn-nodejs-3.0

Major dependencies:

  • Amazon Lambda runtime Node.js 20.x

Changes in syn-nodejs-3.0

  • Support for multi checks blueprint.